In the sixties of the last century, Sino-Soviet relations began to deteriorate sharply, especially after the Battle of Zhenbao Island, and Soviet ambitions became more obvious.
At that time, there was a certain gap between China and the Soviet Union in terms of national strength, especially the Soviet Union's repeated threats to use nuclear weapons against China, which made the relations between the two countries extremely tense, and our leaders felt pressure.
In order to prevent a large-scale invasion by the Soviet Union, Su Yu was immediately sent to the border to recontour to ensure safety. After five consecutive provinces and cities and more than 7,000 kilometers of border investigations, Su Yu successfully found a strategy to deal with the enemy with many years of battlefield experience.
Although no large-scale war broke out, Su Yu's actions made a great contribution to our country's military development strategy. At that time, the Soviet Union was powerful, but China was determined to defend its sovereignty, and this determination and readiness forced the Soviet Union to retreat.
The rupture of Sino-Soviet relations began with Soviet support for the Chinese revolution, but with the coming to power of Khrushchev after the death of Stalin, the Soviet Union began to adopt a negative attitude towards China. Khrushchev openly questioned China's development and demographic issues internationally, which led to a deterioration in relations between the two countries.
After the deterioration of Sino-Soviet relations, the Soviet Union began to frequently interfere with China's territory, especially the encroachment on Zhenbao Island, and even threatened to use nuclear weapons against China. This series of actions showed the hegemonic tendencies of the Soviet Union and forced China to take active defensive measures.
** Su Yu's assignment of a border expedition was a response to this tension. Su Yu proposed a new strategy, advocating active defense and countering the Soviet threat by making full use of geographical advantages and flexible tactics.
Su Yu's thinking has had a far-reaching impact on the study of Chinese affairs, and the strategic ideas and military theories he put forward have provided valuable experience and guidance for China's national defense construction. In his first study of the methods of warfare in the early stage of future wars, he opened up new ideas for the students of the military academy, which is of great significance for China's military development.